Automatic brush



W. H. BARRETT.

AUTOMATIC BRUSH.

APPLICATION FILED rEBIa. I9l9.

Patented Feb. 17', 1920.

INVENTOH mm. nwzar WITNESSES:

zles on the front end of the WILLIAM HENRY BARRETT, OF LOS ANGELES, CALIFORNIA.

AUTOMATIC BRUSH.

Specification of Letters Patent.

Patented Feb. 17, 1920.

Application filed February 3, 1919. Serial No. 274,769.

To all whom it may concern:

Be it known that I, lVILLIAM H. BARRETT, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Automatic Brush, of which the following is a specification.

My invention relates to devices for ing-water, oil, paint, or any other liquid in such a manner as otherwise obtained when applied by a brush.

One object of this invention is to spray liquids under air pressure.

Another object .is to provide a piston-like device of which the triggers operate valves for the release or ejection of the material to be sprayed.

Another object is to provide a device which can be used as an air brush, or duster.

Another object is to provide operating means in the device forming an ejector for ejecting the material to be sprayed by a passing air stream.

Another object is to provide interchangeable nozzles in the front end of the device.

Another object is to provide interchangeable nozzles in the ejecting means of the devlce.

Another object is to provide gravity feeding means for the materials to be sprayed.

Another object is to provide means for interchanging the gravity and pressure feeding means.

Another object is to provide means for pressure connection in conjunction with the gravity feeding means.

Other objects will appear from the following description and appended claims as well as from the accompanying drawing, in which- Figure 1 is a vertical longitudinal sectional view of the device.

Fig. 2 is a side elevation of a faucet provided with a pressure connection-end.

Fig. 3 is a longitudinal section through a cock shell of a slightly modified construction to be used as one of the interchangable nozdevice.

Fig. 4 is an end view of the shell in Fig. 3.

Fig. 5 is a side elevation of the plug for controlling the passage through the shell of Figs. 3 and 4.

In Fig. 1, 6 designates the handle of the device, similarly shaped as the handle of a pistol. Two triggers 7 and 8 are provided sprayfor operating the valves in this device. The

main body of the device forms a closed chamber 10 being provided with a suitable number ofopenings, as indicated at 11, 12 and 13. The opening 11 is threaded to adjustably receive the pressure nozzle 14;. A nut 15 is provided to hold the ressure nozzle ltin adjusted position. he drawing and mixing nozzle 16 is slidingly disposed in the opening 13, preferably in almement with the nozzle It so that the pressure stream from the nozzle H will easily pass into and through the nozzle 16. The receptacle 1'? is screwed into the threaded opening 12 to allow liquids or any other suitable desired mixtures, placed in the receptacle, to be drawn into the nozzle 16 by the jet between the nozzle 14: and the nozzle 16, when so operated. The nozzle 16 is provided with a collar 18 forming a shoulder for the spring 19, which is disposed in the sleeve 20 so as to hold the nozzle 16 pressed against the nozzle 14 in normal position. A cap or ring nut 21 is provided on the sleeve 20 having a suitable opening 22 through which a screw 23 can be screwed into the extension end 24 of the main body to engage the sleeve with the main body. A pin 25, provided on the nozzle. 16. connects with the trigger 7 through the rod 27 and the lever 28, for operating the nozzle 16 against the spring 19 to form the jet opening 30 between the nozzle 14 and the nozzle 16, in which compressed and open position the device is illustrated. The pin 25 of the nozzle 16 projects through the slot 26 in the sleeve 20, limitin the sliding movement of the nozzle 16. 1% spring 29 is provided on the lever 28 helping the automatic closing movement of the spring 19in relation to the nozzle 16 against the nozzle 14. A set screw 31 is provided to further limit the opening movement of the nozzle 16, and, by setting this set screw, a certain opening may be maintained between the two nozzles for obtaining a certain mixture through the device, throughout a certain long period for getting an even coat of paint, or for whatever the device was applied, as will easily be understood, no influencing of the mixtures being then possible through difierently applied pressures on the trigger.

This set screw can also be set so as to close the opening 30 between the nozzles 14 and 16 entirely for awhile and the device can then be used as a duster by the stream of air passing through the device when under air pressure without a misuse of the triggers being possible.

The trigger 8 connects through the lever 32 and the rod 33 with the plunger valve 34. The plunger valve 34 is normally held in closing position by the spring 35, supported by the spring 36, but, in the drawing, the plunger is illustrated in open position pressed against the spring 35 by the trigger. The plun er is for closing the conduit 37 through t e'nozzle 14.

A small conduit 38 is provided in the body of the nozzle 14 leading out of the connecting end 39 and controlled by the crosswise stem 40 for providing top pressure for the receptacle 17 The receptacle 17 is therefore provided with an opening'and connecting end 41 which can easily be connected to the connecting end 39 by a hose or small tube, as will easily be understood.

Instead of the receptacle 17, the opening 12 can easily be connected to the end 42 of a faucet 44 and the connecting end 39 can easily be connected to the end 43 of the same faucet, illustrated in Fig. 2 in the drawing, without changing anything on the principle of the invention.

The connecting end 45 on the rear end of the device is provided for the supply of suitable pressure like steam, air, or' any other similar means for supplying pressure to the device. The plunger 34, being normally closed by the springs 35 and 36, naturally controls the flow of the pressure means through the main conduit 37 by the operation of the trigger 8. 4

The providmg'of the receptacle on the device allows and provides for feeding by gravity as well as by and under pressure when used in conjunction with the pressure connection 39. the same or a similar principle-may be followed by using the faucet, illustrated in Fig. 2, when a plied to a largc tank, which would easily allow a feeding bv gravity as well as a feeding under pressure, as will easily be understood.

To the front end of the device, that is the front end of the sleeve 20, I connect a suitable nozzle, in Fig. 1 a plain round-hole or mouth nozzle being illustrated attached to the device, but a wide-faced (provided with a suitable number of orifices) nozzle, as illustrated in Figs. 3, 4 and 5, or any other slightly modified construction of nozzle can easily be substituted, as will easily be understood.

The round-hole nozzle, illustrated in Fig. 1, consists of nut-ring or set ring 46 with the set screw 47 the mixing and closing sleeve 48, and the mouth piece 49. The set ring 46 is screwed tightly into the front end of the sleeve 20. The mixing sleeve 48 is adjustably held in position within the set ring 46 The mouth piece is coming out of the mouth 50 of tightly screwed against the set ring 46. The setting of the mixing sleeve 48 provides for a suitable opening within the mouth 50 of the mouth piece by the needle end 51 of the sleeve 48. Such setting of the mixing sleeve 51 provides for an even stream of mixture the device no matter how differently thedevice is operated as long as it is operated at all, that is to say that no sudden excessive lump of mixture can be thrown upon one point by a sudden opening of the space 30 between the nozzles 14 and 16.

The wide-faced nozzle, illustratedin Figs. 3, 4 and 5, consists of the main body 52 and the turning plug 53.- The screw-end 54 of the main body is made to fit into the opening of the sleeve 20 in the same way as the set ring 46. The turning plug 53 is made to fit turnably within the taper bore 55 of the main body 52. A suitable numberof small conduits or orifices 56 are provided to distribute the stream of mixture coming out or passing through the main conduit 57 over a suitably wide surface. The turning plug 53 is for that purpose provided with a cut out 58, which is. crosswise to the plug, at one side, preferably just wide enough to receive the stream coming out of the main conduit 57 as indicated at 59, while, at the opposite side, the edge 60-60 is wide enough to distribute the stream-through the small conduits 56. A short turn of the turnin plug 53 naturally closes the small conduits by the edge 6060, as will easily be understood.

Having thus described my invention, I claim:

1. In an automatic brush and mixing device comprising a handle, triggers in the handle, and an ejective mechanism; an interchangeable mouth piece connected to the ejective mechanism ingoperative relation to the triggers, the moutlrpiece having a main conduit and a suitable number of orifices normally in communication with the main conduit, and a turning plug within the mouth piece for controlling the communication between the main conduit and the orifices.

into the mixing chamber, a controlling valve in the said nozzle operatively connected to one of the triggers, a second nozzle proejector disposed in the device,

jecting into the mixing chamber approaching the first'named nozzle so as to form an ejecting means with the first named nozzle Within the device, the second nozzle being slidingly disposed in the device operatively connected to one of the triggers, aside-connecting end on the first named nozzle having a small discharging conduit, a closing stem in the small conduit, and an interchangeable mouth piece at the front end of the device in suitable relation to the ejecting means.

'4. In an automatic brush and mixing device, a suitable number of triggers, mixture supplying means connected to the device, an means for controlling the flow of the pressure through the ejector operatively connected to one of the triggers, means for controlling the ejector opening between the different ejector nozzles operatively connected to one of the triggers, means for gravity feed of the mixture, means for automatic feed of the mixture, and an interchangeable mouth piece for the ejector.

5. In an automatic brush and mixing device, a handle, a suitable number of triggers on the handle, a suitable number of ejectornozzles in operative connection. with the triggers, a suitable number of packin rings at suitable points between the han le and the nozzles, and an interchangeably secured mouth piece in suitable relation to the nozzles.

In testimony that I claim the foregoing as my invention I have signed my name in the presence of two subscribing witnesses.

\VILLIAM HENRY BARRETT.

Witnesses:

JOSEPH W. HOUSE, H. O. BARRETT. 

